extract spigot api as a common dependency so the versions always match

api/build.gradle

@@ -3,10 +3,6 @@ plugins {
     id "maven-publish"
 }
 
-dependencies {
-    compileOnly "org.spigotmc:spigot-api:1.19.4-R0.1-SNAPSHOT"
-}
-
 publishing {
     publications {
         mavenJava(MavenPublication) {

build.gradle

@@ -8,6 +8,10 @@ subprojects {
         toolchain.languageVersion.set(JavaLanguageVersion.of(8))
     }
 
+    dependencies {
+        compileOnly "org.spigotmc:spigot-api:1.8.8-R0.1-SNAPSHOT"
+    }
+
     repositories {
         mavenCentral()
         maven {

plugin/build.gradle

@@ -16,8 +16,6 @@ processResources {
 }
 
 dependencies {
-    compileOnly "org.spigotmc:spigot-api:1.8.8-R0.1-SNAPSHOT"
-
     compileOnly "me.clip:placeholderapi:2.11.3" // Placeholder support
     implementation "com.google.code.gson:gson:2.10.1" // JSON parsing
     implementation "org.bstats:bstats-bukkit:3.0.2" // Plugin stats